WASTEWATER TREATMENT METHOD AND DEVICE

The invention provides a wastewater treatment method and device capable of removing zerovalent selenium, tetravalent selenium, and hexavalent selenium, and removing -divalent selenium, thereby removing the selenium which is harmful matter from the wastewater surely and easily. Provided are the wastewater treatment method and device for oxidizing -divalent selenium included in the wastewater by using an oxidant, or removing -divalent selenium included in the wastewater by using a remover, thereby removing the selenium from the wastewater. 本发明供给将被视为有害物质的硒从排水中可靠且容易地除去的排水处理方法及排水处理装置，其在将0价硒、4价硒及6价硒除去的同时，-2价硒也除去。种包含硒的排水的排水处理方法及排水处理装置，其将所述排水中包含的-2价硒通过氧化剂而氧化、或者将所述排水中包含的-2价硒通过除去剂而除去。